{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:48:24.449654", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2011-Sep-25_to_2011-Sep-27_321.0_-21.5"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2011090001113}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "September 25 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 27 2011"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 101667.08285290406}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["Brazil"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Atlantic-Ocean", "S.E.South-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["South America"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": ["South Atlantic Ocean"]}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": -21.5}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 321.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "321.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 319.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 325.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -28.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -20.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-09-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-41.03, -19.97], [-40.5, -19.75], [-39.97, -19.97], [-39.8, -20.38], [-39.5, -20.25], [-38.97, -20.47], [-38.82, -20.82], [-38.47, -20.97], [-38.25, -21.5], [-38.35, -21.75], [-38.32, -21.82], [-37.97, -21.97], [-37.82, -22.32], [-37.75, -22.35], [-37.5, -22.25], [-36.97, -22.47], [-36.82, -22.82], [-36.47, -22.97], [-36.32, -23.32], [-35.97, -23.47], [-35.75, -24.0], [-35.87, -24.3], [-35.47, -24.47], [-35.25, -25.0], [-35.35, -25.25], [-35.32, -25.32], [-34.97, -25.47], [-34.75, -26.0], [-34.85, -26.25], [-34.82, -26.32], [-34.47, -26.47], [-34.32, -26.82], [-33.97, -26.97], [-33.75, -27.5], [-33.97, -28.03], [-34.32, -28.18], [-34.47, -28.53], [-35.0, -28.75], [-35.53, -28.53], [-35.68, -28.18], [-36.03, -28.03], [-36.25, -27.5], [-36.04, -27.0], [-36.18, -26.68], [-36.53, -26.53], [-36.68, -26.18], [-37.03, -26.03], [-37.18, -25.68], [-37.53, -25.53], [-37.75, -25.0], [-37.65, -24.75], [-37.68, -24.68], [-38.03, -24.53], [-38.25, -24.0], [-38.15, -23.75], [-38.18, -23.68], [-38.25, -23.65], [-38.5, -23.75], [-38.75, -23.65], [-39.0, -23.75], [-39.53, -23.53], [-39.68, -23.18], [-39.75, -23.15], [-40.0, -23.25], [-40.53, -23.03], [-40.75, -22.5], [-40.65, -22.25], [-40.75, -22.0], [-40.65, -21.75], [-40.68, -21.68], [-41.03, -21.53], [-41.25, -21.0], [-41.15, -20.75], [-41.25, -20.5], [-41.03, -19.97]]]]}, "2011-09-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-41.03, -19.97], [-40.5, -19.75], [-39.97, -19.97], [-39.8, -20.38], [-39.5, -20.25], [-38.97, -20.47], [-38.82, -20.82], [-38.47, -20.97], [-38.25, -21.5], [-38.35, -21.75], [-38.32, -21.82], [-37.97, -21.97], [-37.82, -22.32], [-37.75, -22.35], [-37.5, -22.25], [-36.97, -22.47], [-36.82, -22.82], [-36.47, -22.97], [-36.32, -23.32], [-35.97, -23.47], [-35.75, -24.0], [-35.87, -24.3], [-35.47, -24.47], [-35.25, -25.0], [-35.35, -25.25], [-35.32, -25.32], [-34.97, -25.47], [-34.75, -26.0], [-34.85, -26.25], [-34.82, -26.32], [-34.47, -26.47], [-34.32, -26.82], [-33.97, -26.97], [-33.75, -27.5], [-33.97, -28.03], [-34.32, -28.18], [-34.47, -28.53], [-35.0, -28.75], [-35.53, -28.53], [-35.68, -28.18], [-36.03, -28.03], [-36.25, -27.5], [-36.04, -27.0], [-36.18, -26.68], [-36.53, -26.53], [-36.68, -26.18], [-37.03, -26.03], [-37.18, -25.68], [-37.53, -25.53], [-37.75, -25.0], [-37.65, -24.75], [-37.68, -24.68], [-38.03, -24.53], [-38.25, -24.0], [-38.15, -23.75], [-38.18, -23.68], [-38.25, -23.65], [-38.5, -23.75], [-38.75, -23.65], [-39.0, -23.75], [-39.53, -23.53], [-39.68, -23.18], [-39.75, -23.15], [-40.0, -23.25], [-40.53, -23.03], [-40.75, -22.5], [-40.65, -22.25], [-40.75, -22.0], [-40.65, -21.75], [-40.68, -21.68], [-41.03, -21.53], [-41.25, -21.0], [-41.15, -20.75], [-41.25, -20.5], [-41.03, -19.97]]]]}, "2011-09-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-41.03, -19.97], [-40.5, -19.75], [-39.97, -19.97], [-39.8, -20.38], [-39.5, -20.25], [-38.97, -20.47], [-38.82, -20.82], [-38.47, -20.97], [-38.25, -21.5], [-38.35, -21.75], [-38.32, -21.82], [-37.97, -21.97], [-37.82, -22.32], [-37.75, 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[-41.03, -21.53], [-41.25, -21.0], [-41.15, -20.75], [-41.25, -20.5], [-41.03, -19.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.194847185460276}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.1784149784293523}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.503261408815092, 18.554768137011536, 19.46532246378996]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.644974470823286, 16.22517502343078, 16.84033602571236]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.8568097023337264, -2.7914399874653637, -1.886995245488966]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.3785294131272394, -3.194847185460276, -2.4368790673253784]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5414793986693047, -2.2305689260699006, -1.4919281313809734]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.812423390550667, -2.5243349629438616, -1.8565075333189889]}}